O.K. received my SuperChips (3874) F5 Flashpaq today and had a chance to play with it already and here are a few observations for anybody thinking about getting one.
First off when you get it, you have to go to superchips.com and download a program called "Ignition" which is the update program for the F5 Flashpaq programmer.
Once you download Ignition to your computer you connect your programmer via the USB Cable and register it.
Once you register it, it will ask you if you want to purchase an extended warranty for $37.00 which I did.
Once you accept or decline the warranty, you can check for updates - which I suggest you do before you use it;
My F5 had 16 updates/files to download, which took about 10 minutes.
At this point, you can take it out to your vehicle and start playing.
When you hook it up to your Commander - you want to have the ignition on with the engine off/not running.
It will take about 5 minutes to download & read your Engine file - which was a little nerve racking for me because I was getting all kinds of trouble codes while it was doing this - "Check Gauges" "Service 4WD System" "Transmission Overtemp" but apparently this is normal while downloading the engine file, so, don't panic.
I went to change my tire size and to my surprise - the tire size was not listed as 24565R17 (for the stock tire size); It was listed as stock size "28.00" which is the tire height in inches as it turns out. I found a tire chart on my smart phone that listed the tire height of a 26570R17 as 31.6 inches. The F5 Flashpaq only allows you to adjust tire height in .25 inch increments so I changed mine to 31.5 inches which is about as close as you can get to 31.6 inches. This is located under the "Quick Options" Sub Menu;
I drove around a little bit and the speedo seems accurate now, where it was about 3.5 - 4 mph off previously.
Somebody on this forum said they called Superchips and said that Superchips told them that you can disable the TPM sensors with this tuner. I am here to tell you that I don't think that's the case. I have not found an option to disable the TPM sensor.
I also programmed my engine for the 93 octane performance tune. Once you finishing tuning your engine it will clear all of your stored DTC codes (if you have any) just follow the prompts.